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<?php namespace League\Glide\Manipulators; use Intervention\Image\Image; /** * @property string|null $gam */ class Gamma extends BaseManipulator { /** * Perform gamma image manipulation. * * @param Image $image The source image. * * @return Image The manipulated image. */ public function run(Image $image) { $gamma = $this->getGamma(); if ($gamma) { $image->gamma($gamma); } return $image; } /** * Resolve gamma amount. * * @return float|null The resolved gamma amount. */ public function getGamma() { if (null === $this->gam || !preg_match('/^[0-9]\.*[0-9]*$/', $this->gam)) { return; } if ($this->gam < 0.1 or $this->gam > 9.99) { return; } return (float) $this->gam; } }